Disabled decision-making time limits for real this time.
Decision-making cleanup.

I cleaned up the implementation in decision_making.js and made the output of DecisionMakingTrialResult.from_tuple more intelligible.

I removed `this.guessingProbability = 0.5;` from decision_making.js to make the required number of big and small responses (minPos and minNeg) equal.
Added catch trials to decision-making tests.
Represent decision-making amounts as integers internally.
For decision-making tests, don't use state to set the initial level.
Reduced Hazel from 12 to 8 sessions.
Shortened the Hazel battery.
Corrected default_initial_levels for decision-making tests.
Ensure Hazel requests subject ID.
Updated get_hazel_data for the new decision-making results format.